Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d58908b680a09b…

MALICIOUS

PDF

67.9 KB Created: 2020-11-14 17:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2d0a25b94191e229891bd45794600cbb SHA-1: e4bce179412e467961d300f98296dbbca347f1fd SHA-256: 89d58908b680a09b1acab75fa0eb2a66f23523a965af42e788d355af67aa780d
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for a redirector link to 'cctraff.ru'. The 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into believing there are new payment instructions. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics strongly suggest an attempt to redirect users to a malicious site for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/123?utm_term=asus+usb-bt400+chipset In PDF document text
    • https://mulepulevuva.weebly.com/uploads/1/3/4/3/134366291/2334312.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/wokemawudire_kikogivip_lufujolaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7c1a6cc-209f-417c-aa8c-714855ad3876/avengers_endgame_free_youtube_live_stream.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/17395306322.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/93528215281.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/sonictap_music_channels.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e231daa-a6e1-4bb9-8678-e5404e522a1a/witcher_1_savegame.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/filmywap_2017_bollywood_movies_hd_pagalworld._com.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/phat_di_lac_nhap_the.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/pisuniturijolanijupube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92e9c06c-50d3-482f-8e61-4f3b835aff7c/2_player_games_unblocked_tanks.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7F 5076 bytes
SHA-256: e9a3a1465d6221f1e6a174655720e8d8cc4ac841450f5e0894689013403afbca
font_01_sfnt_off0000ddd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD4 10824 bytes
SHA-256: 22e62a757001c1635e970dbcb7055be719617c001aa2631f233763b5343c6949

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